The MAC 2015-217 Mustang GT Axle Back System Features are as followed:

BIG 4" Angle Cut Tips

High Flow MAC Flow Path™ Mufflers

Highly Polished Stainless Steel Tips

Stainless Steel both Inside and Out

A Muscle Car Sound & Great Performance

The MAC 2015-2017 Mustang GT Axle Back System uses the MAC Flow Path Mufflers just as all of the other MAC Cat-Back and Axle-Back System that have come before it. Giving you the Same Performance and Sound that you have come to know from MAC.

The MAC Flow Path Muffler is a Multi Passage Design without any Packing to Burn out. Sound Control will be the same Mile after Mile, Year after Year. Flow Path Mufflers, Flow more Exhaust Gases than most other makes, while maintaining a reasonable Sound. Flow Path Mufflers Patented Design (Patent # 5,739,484), following the Helmholtz Theory of Tone.